Expanded metal lath



Feb. 22,1927.y `1,618,666

J. MANOFSKY EXPANDED METAL LATE Filed June 21. 1926 @ye/H707",

Patented vFaS. 2v2, 1927.

fyUNITEDgST-ATES' 1,618,656 .PATENT/OFFICE.

JOHN MANOFSKY, OF l VAR'IRIEIIQ 02H10, ASSIGNOR TO YOUNGSTOWN- PRESSED STEL i vCOMPANY, OF WARREN, OHIO, A CORPORATION' OE OHIO.

XPANDED METAL 'LA TH.

' Application mea 11111621,

This invention relates to expanded metal lath and is Jfully described in the following specification and shown in lthefalccompanying drawings in which. Figure 1 is a front 5 elevation of a section of a lath embodying the v invent-ion showing the same partly covered with plaster and Fig. 2is a vertical section through the same.

The embodiment illustrated comprises an expandedlath havinga plurality of rows of herringbone construction separated by longitudinal portions 1() which are horizontally disposed.' The sheet-metal blank'is slitted and expanded in a well-known manner to produc/ec` the herringbone lath, having a series ot? strands 11 separated by slots 12. VThese strands will meet in a lcentral strip 13. the outer ends being integral with ed e 'strips 1+i which form part of the longitudinal portions on ribs 10.

The central strip 13 and the edge strips 14, as will be seen in Fig. 2, lie in planes which are substantially parallel to each other and whit-,hare nearly at right angles to the -fro`nt edges' of the strands 11 -when viewed edgewise, a-s in Fig. 2. Thus, it will be seen that the longitudinal portions 10. together Y,with the edge strips 14. form substantially a-,Z-shaped rib and that the-strands 11 extend. in nearly opposite directions from the center strips 14. Thispermits the strands to bend naturally and easily without placing them Linder any V-undue strain or twist and\helps materially- ,in expanding the lath.

lVhen used as lath -wi-th the vcenter strips 13 lying back of the strands l11 immediatelyabove`it',in such a 40 way as to forni a ledge which will serve to support the mortar, as at'A in Fig.- 2f- Like-l .wise the uppermost edgeV` strip 14 will also serve to hold the mortar, as at B. l Another marked advantage of this lath is that for a given weight of metal it is very rigid, the longitudinal ribs'lO being of Z-,

Y l whiclris to ,receiveplaster. the sections are placed horizontally` 1926. Serial No. 117,401. f

scope of theinvention disclosed in the appended claims. 5

I Claim:

1. An expanded metal lath having a plui rality of rowsof herring-bone construction, a Jrow having at one slde a central strip, and longitudinal portions of Z-shaped cross-section. theflanges of said Z-shaped portion.v j forming ends for the strands, said strips andlianges lying in substantially parallel planes at an angle to the planeof the latli so as to form ledges to support mortar pressed through the spaces between strands when the strips( are horizontal.

2. An expanded metal lath having a plu-l ralityof rows of herring-bone construction, each 'row having a centralfstrip,. and longitudinal portions of Z-shaped cross-section,

the flanges of said z -shaped portion forming ends forth@ strands.v 'said strips and flanges lying in substantiallyA parallel planes at an j .angle to the plane of the lath and nearly at right angles to the strandsA so as to form yledges to supportmortar. 4pressed through the space between strands when the strips are. horizontal.

-An expanded metal lath having plurality of rowsof herring-bone construction, each row having a central' str 'ipand longitudinal `portions of Z-shaped` cross-section', Vthelang'es, of said Z-shaped portion forming ends for the strands, said'strips and flanges lying in substantially parallel planes at an angle to the plane of thel-ath, and nearly at right angles to the strands, said rows being separated by `longitudinal portions, so as to .form ledges 'to support mortar pressed strips forming f'ends for the strands,A said strips lying in substantially parallel planes at an anglel to the plane of the lath, and

leach lrow'having a central strip and edge nearly7 at right angles to the strands, said l rows being separated by longitudinal p0rtions', so as to form ledges to support mortar pressed througl1 the space betweenstrands when the strips are horizontal, the edge'- strips, 'at the edges of each-:longitudinal portionbeing nearly1 at right angles thereto and extending in oppositedireetions so as to form a Z-shaped section.

p 5. In an expanded metal latli, n plurality of rows of herring-bone construction, eaeli row having a centr-alstl'ip disposed at an angle to tlie'plane of the strands, a shaped rib parallel to the central strip, the flanges of theZ-rib lyingr substnntially parallel-t0 said central strip andene of said flanges and said\centr`al strip beingintegral with the ends' of one of the rowsof strands.

Y Lemans.

G. In an expanded metal luth, Aa plurality of rowsof herring-bone construction, each row having a central strip disposed atan angle to the plane of tlie strands, a lZ-sliaped rib parallel to the central strip and lying between two of said rows, the flanges of the Y AZ-shnped rib lying substantially parallel to said central strip, und eacli of said flanges being integral with 'the ends of one of the 20 rows of strands.

JOHN MANOFSKY. 

